Home / 156,974.82-216,624.08-85,354.90

Finding the Fourth Proportional to 156,974.82, 216,624.08 and 85,354.90

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Solution

The fourth proportional to 156,974.82, 216,624.08 and 85,354.90 is: 117,789.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,974.82 : 216,624.08 = 85,354.90 : x
  2. Step 2: Convert to fraction form
    156,974.82/216,624.08 = 85,354.90/x
  3. Step 3: Cross multiply
    156,974.82x = 216,624.08 × 85,354.90
  4. Step 4: Simplify right side
    156,974.82x = 18,489,926,685.99
  5. Step 5: Solve for x
    x = 18,489,926,685.99/156,974.82
  6. Step 6: Final answer
    x = 117,789.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.